From 1662dd5a3d5301a54f15f861a5d24c179bf67bca Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Wed, 7 Sep 1994 14:38:28 +0000
Subject: added Py_AtExit() -- register cleanup functions for C modules

---
 Python/pythonrun.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'Python/pythonrun.c')

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 59fa7cad2e..8387eed027 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -466,6 +466,19 @@ fatal(msg)
 int threads_started = 0; /* Set by threadmodule.c and maybe others */
 #endif
 
+#define NEXITFUNCS 32
+static void (*exitfuncs[NEXITFUNCS])();
+static int nexitfuncs = 0;
+
+int Py_AtExit(func)
+	void (*func) PROTO((void));
+{
+	if (nexitfuncs >= NEXITFUNCS)
+		return -1;
+	exitfuncs[nexitfuncs++] = func;
+	return 0;
+}
+
 void
 cleanup()
 {
@@ -489,6 +502,9 @@ cleanup()
 	}
 
 	flushline();
+
+	while (nexitfuncs > 0)
+		(*exitfuncs[--nexitfuncs])();
 }
 
 #ifdef COUNT_ALLOCS
-- 
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